如何比较Python中长度最大的列表？

list1 = [1, 2, 3]
list2 = [4, 5, 6, 7]
list3 = [8, 9]

max_length = max(len(list1), len(list2), len(list3))

lists = [[1, 2, 3], [4, 5, 6, 7], [8, 9]]

max_length = 0
for lst in lists:
    if len(lst) > max_length:
        max_length = len(lst)